Where can I find one of those cool keyboard waffle-makers like the one on the Meta 404 page?
I'm interested in possibly getting one for myself.
Actually, you might. It was recently a Kickstarter campaign that was fully funded.
It was created by Chris Dimino as part of a project that involved breathing new life into a now useless product by giving it another purpose. In this case the ‘useless product’ was an old Corona typewriter that was reborn as the Corona-Matic which makes keyboard shaped waffles.